Definition
UNABLE
Indicates inability to comply with a specific instruction, request, or clearance.
Source: FAA Pilot/Controller Glossary (verbatim from the Federal Aviation Regulations).
Where This Term Is Used
- 14 CFR § 91.1705 — § 91.1705 Required pilot training.
- 14 CFR § 91.1071 — § 91.1071 Crewmember: Tests and checks, grace provisions, training to accepted standards.
- 14 CFR § 91.105 — § 91.105 Flight crewmembers at stations.
- 14 CFR § 61.53 — § 61.53 — Prohibition on Operations During Medical Deficiency
4 sections reference this term in their FAR Decoded content.